class Solution(object):
    def fourSum(self, nums, target):
        """
        :type nums: List[int]
        :type target: int
        :rtype: List[List[int]]
        """
        nums.sort()
        solutions = []
        length = len(nums)

        return solutions

    def search(self, nums, target, depth, solutions,values):
        if depth == 0 or len(nums) < depth or target < 0:
            return